cord[8], cour[8], dorn[5], nord[5], rund[4], urdu[4],
duc[6], don[4], non[4], rod[4], duo[4], dun[3], und[3], nun[3], dur[3], nur[3], run[3],
do[3], od[3], on[3], du[2], ud[2], nu[2], ur[2],
